The Mechanical Thermal Switch can be used with Thermatic Electric Fans & EWP's. It senses the coolant temperature after it passes through the engine block prior to entering the radiator and is adjustable from 104° to 212°F (40° to 100°C). The Thermal Switch is mounted near the radiator and the stainless steel probe fitted inside the radiator hose. The Thermal Switch & relay kit enables a fan to operate both thermally and also when the air conditioning is running.

*Note: If using this switch for use with your EWP's, it will not vary the speed of the pump in response to engine temperature but rather turn the pump on and off at your set temperature.